Hi Marco,
Thanks for using Syncfusion products.
We have analyzed your query. You can turn off the auto-selection of the first item in
DataGrid by creating the Custom SelectionController class and override “ProcessGroupChanged” method.
We have prepared a simple sample to achieve this requirement and can be
downloaded from the following location.
Sample: RowSelectionSample.zip
Please let us
know if you need further assistance.
Thank you,
Jai Ganesh S